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Uniform MnCo(2)O(4.5) porous nanowires and quasi-cubes for hybrid supercapacitors with excellent electrochemical performances

In this work, uniform MnCo(2)O(4.5) nanowires (NWs) on stainless steel foil (SSF) were prepared through a facile, cost-efficient, and eco-friendly hydrothermal method at 120 °C with a post-calcination process in air. The microstructure of MnCo(2)O(4.5) samples could be tuned at different hydrotherma...

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Autores principales: Du, Xuming, Sun, Jiale, Wu, Runze, Bao, Enhui, Xu, Chunju, Chen, Huiyu
Formato: Online Artículo Texto
Lenguaje:English
Publicado: RSC 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9417046/
https://www.ncbi.nlm.nih.gov/pubmed/36133467
http://dx.doi.org/10.1039/d1na00271f
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author Du, Xuming
Sun, Jiale
Wu, Runze
Bao, Enhui
Xu, Chunju
Chen, Huiyu
author_facet Du, Xuming
Sun, Jiale
Wu, Runze
Bao, Enhui
Xu, Chunju
Chen, Huiyu
author_sort Du, Xuming
collection PubMed
description In this work, uniform MnCo(2)O(4.5) nanowires (NWs) on stainless steel foil (SSF) were prepared through a facile, cost-efficient, and eco-friendly hydrothermal method at 120 °C with a post-calcination process in air. The microstructure of MnCo(2)O(4.5) samples could be tuned at different hydrothermal temperatures and quasi-cubes (QCs) were obtained in high yield at 150 °C. The MnCo(2)O(4.5) NW powder peeled off from the SSF delivered an outstanding capacity of 248.62 C g(−1) at 1 A g(−1) with a capacity preservation of 179.43 C g(−1) at 8 A g(−1), while the QCs exhibited 177.19 and 111.73 C g(−1), respectively. To assess the possibility of its actual applications, a hybrid supercapacitor (HSC) device has been assembled by utilizing these MnCo(2)O(4.5) NWs (QCs) and activated carbon (AC) as the cathode and anode, respectively. The MnCo(2)O(4.5) NWs//AC HSC delivered a maximum capacity up to 116.95 C g(−1) and extraordinary cycling durability with only 3.56% capacity loss over 5000 cycles. Besides, the MnCo(2)O(4.5) NWs//AC HSC achieved a maximum energy density of 25.41 W h kg(−1) at a power density of 782.08 W kg(−1), and for the QC-based HSC, it showed a lower energy density of 20.54 W h kg(−1) at 843.34 W kg(−1). These remarkable electrochemical properties demonstrate that the porous MnCo(2)O(4.5) NWs and QCs may serve as promising cathodes for advanced hybrid supercapacitors with superior performance, and the present synthetic methodology may be applied to the preparation of other cobalt-based binary metal oxides with excellent electrochemical properties.
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spelling pubmed-94170462022-09-20 Uniform MnCo(2)O(4.5) porous nanowires and quasi-cubes for hybrid supercapacitors with excellent electrochemical performances Du, Xuming Sun, Jiale Wu, Runze Bao, Enhui Xu, Chunju Chen, Huiyu Nanoscale Adv Chemistry In this work, uniform MnCo(2)O(4.5) nanowires (NWs) on stainless steel foil (SSF) were prepared through a facile, cost-efficient, and eco-friendly hydrothermal method at 120 °C with a post-calcination process in air. The microstructure of MnCo(2)O(4.5) samples could be tuned at different hydrothermal temperatures and quasi-cubes (QCs) were obtained in high yield at 150 °C. The MnCo(2)O(4.5) NW powder peeled off from the SSF delivered an outstanding capacity of 248.62 C g(−1) at 1 A g(−1) with a capacity preservation of 179.43 C g(−1) at 8 A g(−1), while the QCs exhibited 177.19 and 111.73 C g(−1), respectively. To assess the possibility of its actual applications, a hybrid supercapacitor (HSC) device has been assembled by utilizing these MnCo(2)O(4.5) NWs (QCs) and activated carbon (AC) as the cathode and anode, respectively. The MnCo(2)O(4.5) NWs//AC HSC delivered a maximum capacity up to 116.95 C g(−1) and extraordinary cycling durability with only 3.56% capacity loss over 5000 cycles. Besides, the MnCo(2)O(4.5) NWs//AC HSC achieved a maximum energy density of 25.41 W h kg(−1) at a power density of 782.08 W kg(−1), and for the QC-based HSC, it showed a lower energy density of 20.54 W h kg(−1) at 843.34 W kg(−1). These remarkable electrochemical properties demonstrate that the porous MnCo(2)O(4.5) NWs and QCs may serve as promising cathodes for advanced hybrid supercapacitors with superior performance, and the present synthetic methodology may be applied to the preparation of other cobalt-based binary metal oxides with excellent electrochemical properties. RSC 2021-06-03 /pmc/articles/PMC9417046/ /pubmed/36133467 http://dx.doi.org/10.1039/d1na00271f Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Du, Xuming
Sun, Jiale
Wu, Runze
Bao, Enhui
Xu, Chunju
Chen, Huiyu
Uniform MnCo(2)O(4.5) porous nanowires and quasi-cubes for hybrid supercapacitors with excellent electrochemical performances
title Uniform MnCo(2)O(4.5) porous nanowires and quasi-cubes for hybrid supercapacitors with excellent electrochemical performances
title_full Uniform MnCo(2)O(4.5) porous nanowires and quasi-cubes for hybrid supercapacitors with excellent electrochemical performances
title_fullStr Uniform MnCo(2)O(4.5) porous nanowires and quasi-cubes for hybrid supercapacitors with excellent electrochemical performances
title_full_unstemmed Uniform MnCo(2)O(4.5) porous nanowires and quasi-cubes for hybrid supercapacitors with excellent electrochemical performances
title_short Uniform MnCo(2)O(4.5) porous nanowires and quasi-cubes for hybrid supercapacitors with excellent electrochemical performances
title_sort uniform mnco(2)o(4.5) porous nanowires and quasi-cubes for hybrid supercapacitors with excellent electrochemical performances
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9417046/
https://www.ncbi.nlm.nih.gov/pubmed/36133467
http://dx.doi.org/10.1039/d1na00271f
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